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Finding the Fourth Proportional to 18,391.88, 25,379.03 and 10,323.68

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Solution

The fourth proportional to 18,391.88, 25,379.03 and 10,323.68 is: 14,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.88 : 25,379.03 = 10,323.68 : x
  2. Step 2: Convert to fraction form
    18,391.88/25,379.03 = 10,323.68/x
  3. Step 3: Cross multiply
    18,391.88x = 25,379.03 × 10,323.68
  4. Step 4: Simplify right side
    18,391.88x = 262,005,079.94
  5. Step 5: Solve for x
    x = 262,005,079.94/18,391.88
  6. Step 6: Final answer
    x = 14,245.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.